/// 保存密码，密码提示的内容
class User {
  String? pwd; //密码
  String? pwdTip; //密码提示

  ///如果pwdTip为null，那么设置一个空字符串值给他
  User(String? pwd, String? pwdTip) {
    this.pwd = pwd;
    if (pwdTip == null) {
      this.pwdTip = "";
    } else
      this.pwdTip = pwdTip;
  }

}
